EP0028893B1 - Wärmeisolierte Dachstruktur und wärmeisolierte Eindeckung für eine solche Dachstruktur - Google Patents

Wärmeisolierte Dachstruktur und wärmeisolierte Eindeckung für eine solche Dachstruktur Download PDF

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Publication number
EP0028893B1
EP0028893B1 EP80303771A EP80303771A EP0028893B1 EP 0028893 B1 EP0028893 B1 EP 0028893B1 EP 80303771 A EP80303771 A EP 80303771A EP 80303771 A EP80303771 A EP 80303771A EP 0028893 B1 EP0028893 B1 EP 0028893B1
Authority
EP
European Patent Office
Prior art keywords
purlin
sleeve
purlins
web
heat insulating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP80303771A
Other languages
English (en)
French (fr)
Other versions
EP0028893A2 (de
EP0028893A3 (en
Inventor
Frederick Charles Coles
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anglia Jay Purlin Co Ltd
Original Assignee
Anglia Jay Purlin Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Anglia Jay Purlin Co Ltd filed Critical Anglia Jay Purlin Co Ltd
Publication of EP0028893A2 publication Critical patent/EP0028893A2/de
Publication of EP0028893A3 publication Critical patent/EP0028893A3/en
Application granted granted Critical
Publication of EP0028893B1 publication Critical patent/EP0028893B1/de
Expired legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92Protection against other undesired influences or dangers
    • E04B1/94Protection against other undesired influences or dangers against fire
    • E04B1/941Building elements specially adapted therefor
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04DROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
    • E04D13/16Insulating devices or arrangements in so far as the roof covering is concerned, e.g. characterised by the material or composition of the roof insulating material or its integration in the roof structure
    • E04D13/1606Insulation of the roof covering characterised by its integration in the roof structure
    • E04D13/1612Insulation of the roof covering characterised by its integration in the roof structure the roof structure comprising a supporting framework of roof purlins or rafters
    • E04D13/1625Insulation of the roof covering characterised by its integration in the roof structure the roof structure comprising a supporting framework of roof purlins or rafters with means for supporting the insulating material between the purlins or rafters
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04DROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
    • E04D13/16Insulating devices or arrangements in so far as the roof covering is concerned, e.g. characterised by the material or composition of the roof insulating material or its integration in the roof structure
    • E04D13/1606Insulation of the roof covering characterised by its integration in the roof structure
    • E04D13/1612Insulation of the roof covering characterised by its integration in the roof structure the roof structure comprising a supporting framework of roof purlins or rafters
    • E04D13/1637Insulation of the roof covering characterised by its integration in the roof structure the roof structure comprising a supporting framework of roof purlins or rafters the roof purlins or rafters being mainly insulated from the interior, e.g. the insulating material being fixed under or suspended from the supporting framework

Definitions

  • the inverted tee-bars may seat in locating slots pressed out from the inturned flanges of the outer sleeve of the insulating sleeve assembly, retaining clips being located over said inverted tee-bars and under the ends of the inturned flanges adjoining the slots in order to secure the inverted tee-bars in position.
  • the angled lip 22 is hooked over the upturned lip 15 of the purlin bottom flange 14 temporarily to provide sole support for said sleeve.
  • the latter is then pivoted up against the underside of the purlin bottom flange 14, and fixed in position by means of the retaining clips 24.
  • This is a relatively simple task, since it requires no matching of the holes in the purlin 10 with any particular points on the sleeve 16, as the retaining clips can be positioned substantially anywhere along the sleeve 16 subject to the requirement for reasonably uniform support.
  • a strap 1 6A fits over the butt joint between adjacent sleeves 16.
  • Rigid self-supporting panels 31 of insulating, fire-retardant plastics materials are laid in the open rectangular trays formed by the substantially coplanar top surfaces of the flanges 18, 19 and of the crosspieces of the inverted tee-bars 29.
  • the panels 31 are held down in the trays against lift by suitable pressure clips (not shown) mounted on the purlins and/or tee-bars. These panels 31 form a substantially flat ceiling to the building interior.
  • the above-described arrangement has the advantages of substantially eliminating any cold bridge which could permit heat transfer through the purlins 10, 10A from the warm building interior to the cold space above the insulating layer 31, and of providing a cold space of substantial depth below the outer roof covering (not shown) which is fixed in a conventional manner to the top flanges 11 of the purlins.
  • this cold space of substantial volume is readily ventilated, thus minimising risk of condensation problems. It is also to be noted that the whole structure is assembled of fire-retardant materials.
  • the positioning of the drilled holes for the fixings 27 in the purlin for the clips 24 is not critical, since there is no requirement for positioning of these retaining clips in relation to the length of the insulating sleeve assembly except in so far as a reasonably uniform support is desirable.
  • the outer sleeves 1 6, the insulating sleeve retaining clips 24 and butt straps 16A provided to cover the butt joints between adjacent insulating sleeve assemblies, may all be formed of cold rolled steel cut to length as necessary, although, as previously mentioned, the outer sleeves 16 may alternatively be produced of a relatively rigid plastics material.
  • the insulating sleeve assembly 16, 17 minimises any cold bridge between the building interior and the cold space above the insulating layer 31. Only a minimum of heat conduction can occur through the insulating sleeve retaining clips 24, and this, can be substantially eliminated by introducing the above-mentioned insulating washer on the bolt fixing said clips to the main web of the purlin.
  • the cold space above the insulating layer 31 can readily be ventilated, for example by means of louvred barge boards at the gable ends of the building. Problems of condensation are therefore also minimised. It will also be apparent that it is possible to revert to the use of standard length hook members for securing the outer roofing sheets in position, thus reducing the likelihood of deformation occurring within the roof structure.
  • FIG. 8 The form of a multibeam purlin appears clearly from Figure 8. It has a main web 36 with angled portions 37, 38 to provide improved stiffness against twisting and deformation generally, an upper transverse web 39 with depending lip 40, and a lower transverse web 41 with an upstanding lip 42.
  • the insulating sleeve assembly 16, 17 is substantially identical with that previously described, although it can be seen by comparison of Figures 7 and 8 that, for the multibeam purlin 35, the limbs of the U-shaped insulating filler 17 can be of equal width instead of the unequal widths shown for the Z-purlin.
  • the J-purlin 45 has a main web 46, preferably but not essentially incorporating an angled portion 47 connecting to an upper transverse web 48 having a depending lip 49.
  • the angled portion 47 stiffens the fold where the main web 46 connects to the transverse web 48, assuming the purlin to be produced by cold rolling.
  • the J-purlin has base webs 50, 51 respectively projecting to opposite sides of the main web 46.
  • the J-purlin is preferably formed from steel plate by cold rolling, and in accordance with this method production, the two oppositely directed base webs 50, 51 are formed by folding the steel plate back beneath itself to form one base web, the web 50, of a double thickness of metal (although the two steel layers thereof are not necessarily in close contact).
  • the other base web 51 has a single thickness of metal, but is stiffened with an upstanding lip or, as illustrated, a folded over lip 52.
  • the insulating sleeve assembly 53, 53A, 54, 54A does not in itself have to provide a tee-bar supporting platform on one side of the main web of the purlin. It will also be noted from Figures 3 and 9 that the sleeve retaining clips 24 are no longer required.
  • FIG 10 employing identical reference numerals to Figures 1 and 4, is employed to show in enlargement the manner in which the sleeve assembly 16, 17 serves to locate the ends of the tee-bars 29.
  • the form of a tabbed retaining clip 30 in relation to a broken-off tee-bar 29 is clearly shown on the left-hand side of the figure, while the manner in which a locating recess 23 is formed in the upper flange 18 of the outer sleeve 16 of the sleeve assembly, by partly severing and folding a portion 23A of said flange 18, is also more clearly shown.
  • the lateral tabs 30A on the retaining clip 30 fit under the edge portions 18A of the flange 18 adjacent the recess 23 in order to secure the tee-bar 29 in position.
  • Figure 10 also serves to illustrate an alternative locating means for the end of a tee-bar 29, which may be optionally provided in place of the locating recess 23 in the upper flange 19 of the outer sleeve 16 on the opposite side of the purlin from the flange 18 (the purlin, and likewise the angled lip 22 on the flange 18 of the outer sleeve 16, are for clarity omitted in Figure 10).
  • This comprises a T-slot 60 cut in the flange 19, into which the end of the tee-bar 29 is received directly, the lateral webs of the tee-bar engaging under the flange 19 at the edge portions thereof adjoining the T-slot.
  • a located tee-bar is indicated at 29A in Figure 10.
  • FIG 11 the right-hand part 53A, 54A of a longitudinally split sleeve assembly of the kind shown in Figure 6 is illustrated in enlargement. The purpose is to show the locating recess 23. In a J-purlin arrangement, it is preferred not to employ locating T-slots of the form shown in Figure 10. However, in all embodiments, various alternative forms of tee-bar locating means may be employed, preferably means carried by the insulating sleeve assembly.
  • a vapour sealed heat insulating roof structure in accordance with the invention is shown in Figure 12.
  • the preferred arrangement comprises a plurality of spaced parallel roof purlins. Conveniently, these purlins are Z-purlins 10, 10A as previously described with reference to Figure 7, and the same reference numerals are again employed. Again, as previously described with reference to Figures 4 and 7, the base webs 14 of the purlins 10, 10A are sheathed with insulating sleeve assemblies 16, 17.
  • the trays 70 are supported in side-by-side relationship along the lengths of the purlins 10, 10A with the side walls, 71 and 73 respectively, of adjacent trays juxtaposed.
  • the lipped upper edge 72 of the wall 71 interlocks with the hooked upper edge 74 of the wall 73 of the adjacent tray, and is received into the plastic sealant to form a vapour seal therewith.
  • the sheet metal trays 70 are insulated from the base webs 14 of the purlins 10, 10A by the insulating sleeve assemblies 16, 17.
  • strips 75 of plastic or mastic sealant are laid along the inturned flanges 18, 19 of the outer sleeves 16, on which the end edges of the trays 70 are received when the trays are placed in position.
  • the trays 70 are then rivetted through the sealant to the inturned flanges 18, 19, as indicated at 76, in order to prevent vacuum lift, i.e. lifting of the trays due to air pressure changes in the building space below.
  • the sealant strips 75 ensure a vapour seal between the trays and the purlin assemblies.
  • Insulation conveniently in the form of slightly oversized insulating panels 31, is then located in the trays 18.
  • the panels 31 being oversized, they expand to abut one another over the tops of the interlocked side walls 71 and 73 of the trays 70.
  • the above-described arrangement is essentially an inter-purlin heat insulating system, like that described with previous reference to any of Figures 1 to 3.
  • the outer roof skin conventionally asbestos sheets, can be secured to the tops of the purlins 10, 10A in the usual manner, i.e. by means of hooked bolts which fix to the upper lateral webs 11 of the purlins.
  • the above-described interlocking side walls for the trays are not essential, since other means can be devised for producing a vapour seal between the juxtaposed side edges of adjacent trays.
  • Other sealing means may be employed between the sheet metal trays and the purlins, and such means may also serve as insulation.
  • FIG 14 which will be clear without detailed description, shows a vapour sealed heat insulating roof structure based on J-purlins 45.
  • the same reference numerals are employed as in previously described Figures 6, 9, 12 and 13.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Building Environments (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)

Claims (6)

1. Wärmeisolierende Dachkonstruktion mit einer Vielzahl von parallel in einem Abstand zueinander angeordneten Dachpfetten (10, 10A oder 35, 35A oder 45, 45A), von denen jede mindestens mit einem seitlichen Fußsteg versehen ist, mit zwischen den Pfetten gehaltenen Querträgern (29 oder 70), die mit einer Schicht aus wärmeisolierendem Material (31) versehen sind oder eine solche tragen, und mit einem Konstruktionsteil in Form eines wärmeisolierenden und feuerhemmenden Überzuges, der den Fußsteg bzw. die -stege jeder Pfette (10, 10A oder 35, 35A oder 45, 45A) umschließt und in der Lage ist, metallische Querträger (29) ohne Schaffung einer wärmeleitenden Brücke zwischen den Querträgern und der Pfette zu stützen, dadurch gekennzeichnet, daß das Überzugsteil als Einheit aus einer feuerhemmenden, steifen, äußeren Umkleidung (16, 53, oder 56) mit einer wärmeisolierenden Füllung (17, 54 oder 57) gebildet ist, die zur Aufnahme des Fußsteges oder der -stege (14 oder 41 oder 50, 51) der Pfette mit Rücksprüngen versehen bzw. geschlitzt ist, und daß die steife Umkleidung die Unterseite und die Oberseite des Überzugsteil festlegt, wobei letztere als Auflage für die Querträger in gleicher Höhe auf beiden Seiten des Hauptsteges der Pfette oberhalb des Niveaus ihres Fußsteges oder ihrer Fußstege dient, während die Füllung die Umkleidung von der Pfette isoliert.
2. Konstruktion nach Anspruch 1, dadurch gekennzeichnet, daß die zwischen den Pfetten gehaltenen Querträger kopfstehende T-Stangen umfassen, die rechteckig eingerahmte Auflagen bilden, wobei jede Auflage durch zwei sich gegenüberliegende Überzugsteile und zwei sich gegenüberliegende Querträger festgelegt ist, und daß auf der äußeren Umkleidung jedes Überzugsteils Querträger-Haltemittel zur Ausrichtung der Querträger auf sich gegenüberliegenden Seiten des Hauptsteges der Pfette ausgebildet sind, wobei die Haltemittel Abschnitte (23), die in dem oberen Flansch (18 oder 19) der äußeren Umkleidung zur Bildung eines rückspringenden Sitzes für die Enden der T-Stangen ausgeschnitten sind, sowie mit Laschen versehene Verbindungsklipse (30) beinhalten, die die Enden der T-Stagen übergreifen, wobei ihre Laschen unter die oberen Flansche der äußeren Umkleidung neben den ausgeschnittenen Abschnitten greifen.
3. Konstruktion nach Anspruch 1, dadurch gekennzeichnet, daß die zwischen den Pfetten gehaltenen Querträger eine Vielzahl von Auflageböden (70) umfassen, daß jeder Auflageboden mit sich gegenüberliegenden, quer zu den Pfetten verlaufenden Seitenwänden (71, 73) versehen ist, die zur Herbeiführung einer mit Hilfe einer Dichtung ineinandergreifenden Verbindung zur Bildung einer Dampfsperre an benachbarten Seitenkanten benachbarter Auflageböden ausgestaltet sind, und daß eine Streifendichtung (75) zwischen die Überzugsteile und die äußeren Randabschnitte der Auflageböden gelegt ist, wobei die äußeren Randabschnitte der Auflageböden an de Überzugsteilen befestigt sind.
4. Konstruktion nach einem der Ansprüche 1-3, dadurch gekennzeichnet, daß jede Pfette jeweils Fußstege, die zu sich gegenüberliegenden Seiten ihres Hauptsteges abstehen, und eine Querschnittsform aufweist, die im wesentlichen der Form eines kopfstehenden "J" entspricht, daß das Überzugsteils aus zwei der Länge nach geteilten Bestandteilen (53. 53A und 54, 54A) gebildet ist, wobei jeweils ein Bestandteil für jeweils einen Fußsteg der Pfette bestimmt ist, und daß Rückhaltebänder (55) vorgesehen sind, um die beiden Überzugsbestandteile in zusammengebautem, die Fußstege umschließenden Zustand zusammenzuhalten.
5. Konstruktion nach einem der Ansprüche 1-4, dadurch gekennzeichnet, daß jede Pfette einen Fußsteg aufweist, der nur in die eine Richtung von ihrem Hauptsteg absteht, daß die Pfette eine Mehrbalken-Pfette oder eine Pfette mit einerm Querschnitsprofil ist, das im wesentlichen die Form eines "Z" aufweist, daß auf der dem seitlichen Fußsteg abgewandten Seite des Pfetten-Hauptsteges ein Halteklip (24) zur Befestigung des Überzugteils an der Pfette vorgesehen ist, und daß das Überzugsteil einen oberen Flansch (18) mit einer überstehenden Lippe (23) aufweist, die während der Anbringung des Überzugsteils an dem Fußsteg der Pfette so angeordnet ist, daß sie dem Überzugsteil von dem Fußsteg herabzuhängen gestattet.
6. Wärmeisolierende Dachkonstruktion nach einem der Ansprüche 1-5, dadurch gekennzeichnet, daß die steife äußere Umkleidung (16, 53 oder 56) aus kaltgewalztem Stahl besteht.
EP80303771A 1979-11-08 1980-10-24 Wärmeisolierte Dachstruktur und wärmeisolierte Eindeckung für eine solche Dachstruktur Expired EP0028893B1 (de)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
GB7938647 1979-11-08
GB7938647 1979-11-08
GB8013454 1980-04-23
GB8013454 1980-04-23
GB8015917 1980-05-14
GB8015917 1980-05-14
GB8026740 1980-08-16
GB8026740 1980-08-16

Publications (3)

Publication Number Publication Date
EP0028893A2 EP0028893A2 (de) 1981-05-20
EP0028893A3 EP0028893A3 (en) 1981-07-22
EP0028893B1 true EP0028893B1 (de) 1984-02-01

Family

ID=27449146

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80303771A Expired EP0028893B1 (de) 1979-11-08 1980-10-24 Wärmeisolierte Dachstruktur und wärmeisolierte Eindeckung für eine solche Dachstruktur

Country Status (5)

Country Link
EP (1) EP0028893B1 (de)
AU (1) AU537808B2 (de)
CA (1) CA1148323A (de)
DE (1) DE3066420D1 (de)
GB (1) GB8312779D0 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0218375B1 (de) * 1985-09-10 1992-06-03 Pre-Formed Components Limited Brandschutz für Böden und Decken
GB2194262B (en) * 1986-08-20 1990-04-04 Frederick Charles Coles Improvements in heat-insulated building arrangements

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB909736A (en) * 1960-04-29 1962-10-31 Olof Oskar Hogman Improvements in or relating to false ceilings
GB1104685A (en) * 1964-07-17 1968-02-28 Tentest Company Ltd Improvements in or relating to structural systems
US3319389A (en) * 1964-08-04 1967-05-16 B & L Lighting Company Suspended ceiling assembly including interlocking grid members and cover moldings
GB1072005A (en) * 1964-12-04 1967-06-14 Harold Stier Wood Improvements in and relating to the insulation of roofs
FR1516864A (fr) * 1966-12-22 1968-02-05 Ferodo Sa éléments de construction composites et leurs applications, notamment pour la réalisation de faux-plafonds à l'épreuve du feu
FR2146119B3 (de) * 1971-07-19 1974-04-05 Saret
FR2234432A1 (en) * 1973-06-19 1975-01-17 Brioude Yvon Seal for false ceilings - consists of PVC shaped piece to prevent thermal bridges
US4014150A (en) * 1975-12-19 1977-03-29 Johns-Manville Corporation Insulation system for building structures

Also Published As

Publication number Publication date
EP0028893A2 (de) 1981-05-20
GB8312779D0 (en) 1983-06-15
EP0028893A3 (en) 1981-07-22
CA1148323A (en) 1983-06-21
AU6360680A (en) 1981-05-14
AU537808B2 (en) 1984-07-12
DE3066420D1 (en) 1984-03-08

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